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There are two thermal reservoirs: the hot reservoir is at 1200 K and the cold reservoir is at 600 K. If you wanted to transfer 100 kJ from on reservoir to the other, what would the change in entropy of the two reservoirs be?
a 0.25kg block is held compressed 0.1m against a spring k1000nm. what is the max height of the block after it is
a 3000lb car is traveling at 60mih up an inclined surface of 5deg when the brakes are applied creating a constant
a sociologist wishes to determine whether there is a relationship between the sex of a person and the amount of alcohol
a double acting cylinder with a single rod must produce a thrust of 80kn and move out with a velocity of 3mms on the
a carnot heat engine operates between 40c and 320 c. what is the thermal efficiency? if the work output is 200 kjkg
if a 1 micro-coulomb charge is next to a 4 micro-coulomb charge the magnitude of the repulsive force on the 1
an injected slug of tracer material flows with its carrier fluid down a long straight pipe in dispersed plug flow. at
construct a 99 confidence interval estimate of the mean of the differences between volumes for the first born and the
1. calculate the percent of the total resistance for external diffusion internal diffusion and surface reaction.2.
if a neutral metal sphere is connected to ground through a wire when a positively charged glass rod comes close to the
determine the magnitude of its total accleration when (a) t=0 and (b) t=2 Whats the solution.
derive an equation that can be integrated to find the angular velocity of the bar as it passes through the vertical
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a 200-mm-long strip of metal is stretched in two steps first to 300mm and then to 400mm. show that the total true
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a steel pipe of 12-in. outer diameter is fabricated from 14in. thick plate by welding along a helix which forms an
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What is the nozzle-exit-to-throat area ratio for case (a)? The gross thrust is the contribution to engine thrust made by the exhaust nozzle only.
Also, compare with the efficiency of an Otto cycle operating with the same maximum pressure.
consider a front loader washer that weighs 200 lb with a 6 lb towels. the size of the drum is 0.4 m. during a spin
two kilogram of water initially at 200 degc and 0.4 mpa undergoes an isothermal internally reversible compression
a steel pipe of 12-in outer diamer is fabricated from 14-in-thick plate by welding along a helix that forms an angle of
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